After a winter of record cold and heavy snowfall, dissolved oxygen levels drop under ice, suffocating fish and other ...

I grew up in Alaska and I’ve heard this story forever, including when I worked on a salmon fishing boat for two summers. It’s the claim of a sometimes lethal danger to fishermen posed by a large ...

Earthquakes in December and February created waves in a Death Valley National Park pond that devastated the habitat of one of the world's rarest fish, but recovery efforts are now showing promise, ...